﻿using CoreShop.Model;
using System;
using System.Collections.Generic;
using System.ComponentModel;

namespace CoreShop.Library
{
    public class EnumHelper
    {
        /// <summary>
        /// 将枚举转成List
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <returns></returns>
        public static List<EnumEntity> EnumToList<T>()
        {
            List<EnumEntity> list = new List<EnumEntity>();

            foreach (var e in Enum.GetValues(typeof(T)))
            {
                EnumEntity m = new EnumEntity();
                object[] objArr = e.GetType().GetField(e.ToString()).GetCustomAttributes(typeof(DescriptionAttribute), true);
                if (objArr != null && objArr.Length > 0)
                {
                    DescriptionAttribute da = objArr[0] as DescriptionAttribute;
                    m.description = da.Description;
                }
                m.value = Convert.ToInt32(e);
                m.title = e.ToString();
                list.Add(m);
            }
            return list;
        }

        /// <summary>
        /// 将枚举转成List
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <returns></returns>
        public static List<int> EnumToListInt<T>()
        {
            List<int> list = new List<int>();
            foreach (var e in Enum.GetValues(typeof(T)))
            {
                list.Add(Convert.ToInt32(e));
            }
            return list;
        }

        /// <summary>
        /// 根据枚举值来获取单个枚举实体
        /// </summary>
        /// <typeparam name="T">枚举</typeparam>
        /// <param name="value">value</param>
        /// <returns></returns>
        public static EnumEntity GetEnumberEntity<T>(int value)
        {
            foreach (var e in Enum.GetValues(typeof(T)))
            {
                EnumEntity m = new EnumEntity();
                object[] objArr = e.GetType().GetField(e.ToString()).GetCustomAttributes(typeof(DescriptionAttribute), true);
                if (objArr != null && objArr.Length > 0)
                {
                    DescriptionAttribute da = objArr[0] as DescriptionAttribute;
                    m.description = da.Description;
                }
                m.value = Convert.ToInt32(e);
                m.title = e.ToString();
                if (value == m.value)
                {
                    return m;
                }
            }
            return null;
        }

        /// <summary>
        /// 获取指定类型的int值得枚举对象
        /// </summary>
        /// <param name="value">值</param>
        /// <param name="t">类型</param>
        /// <returns></returns>
        public static T ToObject<T>(int value)
        {
            Type t = typeof(T);
            return (T)System.Enum.ToObject(t, value);
        }

        /// <summary>
        /// 指定枚举的string值，获取枚举对象
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="value"></param>
        /// <returns></returns>
        public static T Parse<T>(string value)
        {
            return (T)System.Enum.Parse(typeof(T), value);
        }
        /// <summary>
        /// 获取指定类型的枚举列表
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <returns></returns>
        public static Dictionary<int, string> GetList<T>()
        {
            Type t = typeof(T);
            Dictionary<int, string> dic = new Dictionary<int, string>();
            foreach (var item in System.Enum.GetValues(t))
            {
                dic.Add((int)item, System.Enum.GetName(t, item));
            }
            return dic;
        }
        // 获取name
        public static string GetName<T>(int id)
        {
            Type t = typeof(T);
            return System.Enum.ToObject(t, id).ToString();
        }

        public static List<object> GetNameList<T>()
        {
            Type t = typeof(T);
            List<object> res = new List<object>();
            foreach (var item in System.Enum.GetValues(t))
            {
                res.Add(new { id = (int)item, name = System.Enum.GetName(t, item) });
            }
            return res;
        }

        /// <summary>
        /// 根据枚举值value来获取单个枚举实体的文字描述内容
        /// </summary>
        /// <typeparam name="T">枚举</typeparam>
        /// <param name="value">value</param>
        /// <returns></returns>
        public static string GetDescByValue<T>(int value)
        {
            foreach (var e in Enum.GetValues(typeof(T)))
            {
                EnumEntity m = new EnumEntity();
                object[] objArr = e.GetType().GetField(e.ToString()).GetCustomAttributes(typeof(DescriptionAttribute), true);
                if (objArr != null && objArr.Length > 0)
                {
                    DescriptionAttribute da = objArr[0] as DescriptionAttribute;
                    m.description = da.Description;
                }
                m.value = Convert.ToInt32(e);
                m.title = e.ToString();
                if (value == m.value)
                {
                    return m.description;
                }
            }
            return "";
        }


        /// <summary>
        /// 根据枚举值value来获取单个枚举实体的文字描述内容
        /// </summary>
        /// <typeparam name="T">枚举</typeparam>
        /// <param name="value">value</param>
        /// <returns></returns>
        public static string GetEnumByValue<T>(int value)
        {
            foreach (var e in Enum.GetValues(typeof(T)))
            {
                EnumEntity m = new EnumEntity();
                object[] objArr = e.GetType().GetField(e.ToString()).GetCustomAttributes(typeof(DescriptionAttribute), true);
                if (objArr != null && objArr.Length > 0)
                {
                    DescriptionAttribute da = objArr[0] as DescriptionAttribute;
                    m.description = da.Description;
                }
                m.value = Convert.ToInt32(e);
                m.title = e.ToString();
                if (value == m.value)
                {
                    return m.description;
                }
            }
            return "";
        }

        /// <summary>
        /// 根据枚举key来获取单个枚举实体的文字描述内容
        /// </summary>
        /// <typeparam name="T">枚举</typeparam>
        /// <param name="key">value</param>
        /// <returns></returns>
        public static string GetEnumDescriptionByKey<T>(string key)
        {
            foreach (var e in Enum.GetValues(typeof(T)))
            {
                EnumEntity m = new EnumEntity();
                object[] objArr = e.GetType().GetField(e.ToString()).GetCustomAttributes(typeof(DescriptionAttribute), true);
                if (objArr != null && objArr.Length > 0)
                {
                    DescriptionAttribute da = objArr[0] as DescriptionAttribute;
                    m.description = da.Description;
                }
                m.value = Convert.ToInt32(e);
                m.title = e.ToString();
                if (key == m.title)
                {
                    return m.description;
                }
            }
            return "";
        }

    }




}
